diff --git a/tools/unit-tests/unit-mock-flash.c b/tools/unit-tests/unit-mock-flash.c
index 549630889..6be1dba0c 100644
--- a/tools/unit-tests/unit-mock-flash.c
+++ b/tools/unit-tests/unit-mock-flash.c
@@ -33,6 +33,8 @@ static int erased_nvm_bank1 = 0;
 static int erased_vault = 0;
 const char *argv0;
 
+#include <sys/stat.h>
+
 
 /* Mocks */
 void hal_init(void)
diff --git a/tools/unit-tests/unit-parser.c b/tools/unit-tests/unit-parser.c
index 5532f1084..776dc0967 100644
--- a/tools/unit-tests/unit-parser.c
+++ b/tools/unit-tests/unit-parser.c
@@ -236,8 +236,8 @@ START_TEST (test_parser_borders)
     ck_assert_msg(wolfBoot_find_header(bad_buff + 8, HDR_TIMESTAMP, &p) == 0, "Parser error: accessing version field out of bounds");
 
     /* High memory access */
-    ck_assert(!wolfBoot_find_header(((void *)(0 - 0xF8)), HDR_VERSION, &p) != 0);
-    ck_assert(!wolfBoot_find_header(((void *)(0 - 0x10)), HDR_VERSION, &p) != 0);
+    ck_assert(wolfBoot_find_header(((void *)(0 - 0xF8)), HDR_VERSION, &p) == 0);
+    ck_assert(wolfBoot_find_header(((void *)(0 - 0x10)), HDR_VERSION, &p) == 0);
 
 }
 END_TEST